(共18张PPT)
Module 5
A lesson in a lab
Grammar
一、倍数的表达法
规则说明 例句
倍数+as+形容词/副词原级+as Asia is four times as large as Europe.
亚洲是欧洲的四倍大。
倍数+形容词/副词比较级+than Our school is twice bigger than yours.
我们学校比你们学校大两倍。
倍数+the+名词(size,height, length,width,etc.)+of The new building is three times the height of the old one.
这座新楼是那座旧楼的三倍高。
句型转换
The roads in the big cities are three times as wide as the roads in our town.
①The roads in the big cities are the roads in our town.
②The roads in the big cities are the roads in our town.
题组训练1
twice
wider
than
three
times
the
width
of
二、用形容词和副词表示比较级和最高级的几个重要句型
1.“比较级+than”意为“比……更……”。
That’s easier said than done.
说比做容易。
2.“...as+原级+as...”意为“和……一样……”。
The building is as high as the tower.
这幢建筑和那座塔一样高。
3.“...not as(so)+原级+as...”意为“不及……”。
My dictionary is not as(so) useful as yours.
我的字典不如你的有用。
4.“more...than...”意为“与其说……不如说……”。
She is more wise than diligent.
与其说她勤勉不如说她聪明。
5.no more...than表示“和……一样不……”;而not more...than则表示“不如……”,相当于“not so...as”。
He is feeling no better than yesterday.
他觉得不比昨天好多少。
She is not more generous than her younger sister.
她不如她妹妹慷慨大方。
6.“比较级+and+比较级”意为“越来越……”。
In the future,there will be less and less oil,gas and coal left.
将来,石油、天然气和煤会越来越少。
Our school is becoming more and more beautiful.
我们的学校正变得越来越美丽。
7.“the+比较级...,the+比较级...”意为“越……,越……”。
The more,the better.越多越好。
The more we have,the more we want.人欲无穷。
8.“否定词+比较级”表示最高级含义。
He has never spent a more worrying day.
他度过了最忧虑的一天。
There is no greater love than that of a man who lays down his life for his friends.
为朋友而放弃生命的人的爱是最伟大的爱。
用所给词的正确形式填空
(1)As summer is coming,the day is becoming and .(long)
(2) (warm) the weather is, (good) the crops will grow.
(3)We have never spent a (exciting) day.
(4)The weather here is (warm) than that of Shanghai.
(5)How beautifully she sings!I’ve never heard a (good) voice.
题组训练2
longer
longer
The warmer
the better
more exciting
warmer
better
三、比较级的修饰语
在英语中,我们经常可以用一些词或短语来修饰形容词或副词的比较级。这些修饰语通常置于比较级的前面,说明比较级的程度。常见的几种形式如下:
1.比较级的修饰语通常为副词或短语,置于比较级前面,说明比较级的程度。常用词或短语有:a little,little,a bit,bit,a lot,a great deal,much,far,rather,slightly,by far,even,still,nearly,almost,any,just等。
In fact,the earth is a bit nearer to the sun during the winter.
事实上,冬天的时候地球离太阳近一些。
A train runs much faster than a bus.
火车比公共汽车跑得快得多。
注意:(1)by far修饰比较级时,一般放在比较级的后面;如果放在前面,则应在形容词或副词的比较级前面加定冠词the。
He is taller by far than his brother.
他比他弟弟高得多。
She is by far the taller of the two sisters.
她显然是两姐妹中比较高的。
(2)any意为“稍微,……一些”,多用于疑问句、否定句或含有否定意义的句子中。
She was too tired to walk any further.
她累得一点也走不动了。
2.分数、百分数、时间、长度、重量等词也可放在比较级前,表示作比较的二者之间相差的程度。
He is five minutes later than he was yesterday.
他比昨天晚到了五分钟。
用所给词的正确形式填空
(1)We need a piece which is a great deal (big) than that.
(2)The man is ten years (old) than his wife.
(3)Your story is much (long) than mine,but it isn’t interesting as mine.
(4)The patient has responded to the treatment rather (good) than expected.
题组训练3
bigger
older
longer
so/as
better
高考链接
Ⅰ.用所给词的正确形式填空
1.If you feel stressed by responsibilities at work,you should take a step back and identify(识别) those of (great) and less importance.
(2016·全国Ⅱ)
2.I have always enjoyed all the events you organized and I hope to attend many (many) in the coming years.(2016·浙江)
3.Finally,that hard work paid off and now the water in the river is
(clean) than ever.(2014·新课标全国Ⅰ)
greater
more
cleaner
4.The (hard) you try to beat him,the more likely you will get hit.(2014·辽宁)
5.We had made our reservation six months (early),but the man at the front desk said there had been a mistake.(2014·广东)
6.Raymond’s parents wanted him to have the (good) possible education.(2014·大纲全国)
harder
earlier
best
7.It may not be a great suggestion.But before a (good) one is put forward,we’ll make do with it.(2013·新课标全国Ⅱ)
8.This is by far (inspire) movie that I have ever seen.
(2013·辽宁)
9.I think watching TV every evening is a waste of time—there are _____ (meaningful) things to do.(2013·天津)
10.It’s said that the power plant is now (two) as large as what it was.(2013·安徽)
better
the most inspiring
more
meaningful
twice
Ⅱ.单句改错(每小题仅有1处错误)
1.They were also the best and worse years in my life.
(2016·全国Ⅲ,短文改错)
2.The dishes which I cooked were Mom’s favoritest.
(2016·四川,短文改错)
3.My mum makes the better biscuits in the world,so I decided to ask her for help.(2015·陕西,短文改错)
worst
favorite
best
4.To make matters bad,now I have to share a room with my younger sister,Maggie.(2013·浙江,短文改错)
5.I learned early in life that I had to be more patient and little aggressive.
(2012·新课标全国,短文改错)
6.Since his family was rich than mine,he had more toys than I did.
(2011·浙江,短文改错)
worse
less
richer